Crayon-trough.



A. DUDPIBLD.

CRAYON THOUGH.

APPLICATION FILEDAPB.. 12. 1913,

Patented Mar. 3, 1914.

z SHEETS-SHEET 1.

A. DUDPIELD.

GRAYON THOUGH.

APPLICATION FILED APR. 12. 1913.

1,088,886. Patented Mar. 3, 1914.

2 SHEETS-SHEET 2.

FLPUQFIELP @JVM ALVIN DUDFIELD, OF LIBERTY, IVIISSOURI.

CRAYON-TROUGH.

Specification of Letters Patent.

Patented Mar. 3, 1914.

Application filed April 12. 1913. Serial No. 760,717.

To all 'who/m, t may concern Be it known that I, ALVIN Dunrmtn, a citizen of the United States, residing at Liberty, in the county of Clay and State of Missouri, have invented cert-ain new and useful Improvements in Crayon-Troughs, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to new and useful improvements in crayon troughs, more particularly adapted for use in connection with blackbo-ards in school-houses and t-he like and my object is to provide a device of this character which will receive the crayon dust and enable the same to be readily removed7 when desired.

A further object of the invention resides in providing a trough formed of metal which affords a fire proof construction and sanitary in every respect and still another object of the invention resides in providing a means in connection with the trough for removing the crayon and dust from the erasers which are used in connection with the blackboard.

A still further object of the invention resides in providing a device which is simple and durable in construction, inexpensive to manufacture and one which will be very efficient and useful in operation.

lVith these and other objects in view, the invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter referred to and more particularly pointed out in the specification and claims.

In the accompanying drawingforming `a part of this application, Figure 1 is a pern spective view showing my device complete and set up for use. Fig. 2 is a transverse section therethrough. Fig. 3 is a longitudinal section through the same. Fig. 4L is a perspective view of one of the end walls of the outer tray of the trough member. Fig. 5 is a similar View of one of the end walls of the inner tray thereof.` Fig. G isa section through a slightly modified form of the invention. Fig. 7 is a perspective View of a still further modified form of the device. Fig. 8 is a vertical section therethrough; and Fig. 9 is a plan view of the blank used for the formation ofthe inner tray.

In describing my invention, I shall refer tothe drawings in which similar reference Icharacters designate corresponding parts thereof.

throughout the several views and 1n which- 1 indicates the wall of a structure having a blackboard 2 mounted thereon and secured to the wall below said blackboard, is my improved crayon trough. This improved trough consists ot an outer tray or trough 3, which is formed of a single piece of metal,

the inner or rear wall of which is of greater height than the outer or front wall thereof and has an outwardly and downwardly deflected flange t formed on the upper edge This inner or rear wall of the outer trough member is secured to the wall of the structure below the blackboard, by means of screws, bolts or the like and the Imaterial forming the outer wall thereof is bent flat against itself and deflected downwardly and inwardly to form the bracing portion 5. This bracing portion is bent inwardly and downwardly to the wall of the structure, where it is also secured, thus securely fastening said tray member to the wall of the structure. End walls G are also provided for this outer trough or tray member, the same being provided with side flanges which are secured to portions of `the outer tray or trough member by the same means which secures the latter to the wall of the structure.

formed of a single piece of metal, the front or outer wall of which is lower than` the inner wall thereof. This outer or front wall of the inner tray member 7 is curved outwardly and inwardly, as shown at S, whereby to be locked into engagement with the outer wall of the outer tray member when the parts are set up. Fmd walls 9 are also provided for the inner tray or `trough member 7, said end walls being formed of pieces of metal doubled upon themselves and the ends thereof interlocked wit-h the bottom and front and rear walls of said tray member. These end walls may be riveted or otherwise similarly secured to the tray member, as desired.

A dust removing or scraping member 10 is provided, the same consisting preferably of a strip of wire mesh having the side edges thereof bent to form depending front and rear flanges. This member is then introduced in the inner tray or trough member and the flanges are of such height as to slightly space the top of the member from the upper edges of said tray An inner tray `or trough member 1s also provided, the `same being' member 7. In practice, the inner tray member is applied to the outer tray member so that the inner wall of said inner tray will be disposed under the flange l of the inner wall of said out-er tray member and t-he curved locking flange 8 of the inner tray member engaged with the outer wall of the outer tray member. lVhen so disposed, the flange el will also engage the inner edge of the top of said scraping member to retain the latter in position in the inner tray. It is, of course, understood that the inner tray member is applied with the end walls thereon and after said inner tray is properly positioned in the outer tray, the end walls of the outer tray are applied and the device is ready for use. This member 10, while described as a scraping or dust removing member is adapted to receive the crayons thereon and all dust from the latter will drop into the inner tray member. As crayon marks are removed from the blackboard by the erasers, for that purpose, the dust therefrom will also drop into the inner tray and all dust is removed froml said erasers by scraping the latter over said member 10. At any time desired, the inner tray member may be removed and the chalk and crayon dust, and other particles removed. In this manner, the air surrounding the blackboard may be kept free from crayon dust which is necessarily caused to float through the air by the scraping and hammering of the erasers on the chalk trays of the blackboard and thus more sanitary conditions are established.

In F ig. 6 of the drawing, I have shown a slightly modified form of the invention, wherein a tray member 11 is provided, the inner or rear wall of which is of greater height. than the outer wall Yand provided with a downwardly and outwardly deflecting flange 12. The upper edge o-f the front wall thereof is also bent slightly downwardly to provide a locking flange 13. This locking flange 13 is adapted to receive thereunder the upper edge of a strip 14, which fits flatly against the outer face of the outer wall of said tray member 11, and is bent inwardly and downwardly from the bottom of the latter, as shown at 15 to be secured to the wall of a structure, thus affording a bracing means for the tray. This modified form, it will be seen, differs from the first mentioned form only in being formed of two pieces, instead of one and thus an advantage is attained in the shipment and storing of the same. This form of the device, is otherwise identical to the form above described.

While I have described an inner and outer tray in connection with my trough, it will be understood that, if desired, the use of the inner tray may be entirely eliminated and the member l0 designated to fit snugly within the outer tray. In this manner, a cheaper edge of the rear wall of the tray is deflected Y inwardly and downwardly to` provide a locking flange 19 which extends lengthwise to points immediately adjacent the ends of the tray. The outer wall of the tray 1S is bent and curved outwardly and inwardly to form a locking roll 20. An inner tray 21. is also provided, formed of a single blank of `material, the latter being bent to form a bottom and front and rear walls therefor. The front wall is of less height than the rear wall, as in the other forms, and the upp-er edge thereof is deflected inwardly and downwardly to form a locking flange 22, the purpose of which will be hereinafter set forth. In the formation of this inner tray 21, end walls 23 are provided, the same being formed from tabs or tongues formed integral on the ends of the strip. A dust removing or scrapingv member 24 is also provided, the same being formed of wire mesh identical to the scraping member 10 in the first mentioned form and this member is adapted to be received in the inner tray 21. This scraping member 24e is locked in place adjacent its forward edge by means of the locking flange 22 on the inner tray and is held in place adjacent its inner edge by means of the locking flange 19 on the outer tray, said latter flange also temporarily locking the inner tray within the outer tray. A separable bracing member 25 is also provided, the outer edge of which is designated coincident to the outline of the outer wall vof the outer tray, the same having a locking roll 26 formed thereon which is adapted to interlock with the roll 20 hereabove mentioned. This bracing member is inclined inwardly and downwardly below the outer tray and is adapted to be secured to the wall of the structure to which the device is secured, as is clearly shown in Fig, 8 of the drawings. From this description of the construction of this form of the device, the manner of setting up the device and of operating the same will be readily understood.

From the foregoing it will be seen that I have provided a simple, inexpensive and eflicient means for carrying out the objects of the invent-ion and while I have particularly described the elements best adapted to perform the functions set forth, it. is obvious that various changes in form, proportion and in the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the principles of the invention.

It will be seen that the flange 19 of the modified form shown in Figs. 7, 8 and 9, in addition to acting as a locking flange for the parts of the device also acts as a molding to hold the black-board in place. It will be seen that such a molding as this will not warp, as the ordinary wood molding will do and the many other difficulties experienced in the use of a wood molding will be overcome by the use of such a device as the one herein shown.

Having thus described this invention, what is claimed is l. A crayon trough consisting of an outer tray, the inner wall of' which is provided with a downwardly and outwardly deflecting flange, an inner tray arranged in the outer tray and held therein under said flange, and an outwardly and inwardly curved extension formed on the outer wall of the inner tray adapted for engagement with the outer face of the outer wall of said outer tray to aid in the locking of said trays in engagement with one another.

2. A crayon trough consisting of an outer tray, the inner' wall of which terminates at the upper end in a downwardly and outwardly defiecting flange, the outer wall of' said tray being bent upon itself to deflect inwardly and downwardly to form a bracing means for said tray, an inner t ay disposed in said outer tray under the aforesaid flange, whereby to be held therein, and means on said inner tray adapted for engagement with the outer tray to aid in the retaining of said trays in locked engagement with one another.

3. In a crayon trough, an outer tray member, an inner tray member' disposed therein, means to removably secure said inner tray member within the outer tray member, and a combined dust removing member and crayon support carried in said, inner t 'ay, said latter member being held `in the inner tray by a portion of the means for retaining said trays together.

Ll. A crayon trough consisting of an outer tray, an inner tray arranged therein, and bracing means for said outer tray, and an inwardly and downwardly bent flange formed at. the upper termination ofthe inner wall of said outer tray and designed for engagement with portions of the inner tray to lock the latter in position in the outer tray.

5. A crayon trough consisting of an outer tray, an inner tray arranged therein, bracing means for said outer tray, an inwardly and downwardly bent flange -formed at the upper termination of the inner wall of said outer tray and designed for engagement with portions of' the inner tray to loclr't-he latter in position in the outer tray, and additional means Yformed on the outer portion of the inner tray and adapted for engagement with the outer portion of the outer tray to lock said trays together.

(3. A crayon trough consisting of an outer tray, the inner wall of which terminates atits upper end in a downwardly and outwardly deflecting flange, the outer wall of said trough being bent upon itself to deflect inwardly and downwardly to form a bracin r means for said tray, an inner tray disposed in said outer tray under the aforesaid flange, whereby to be held therein, and an outwardly and inwardly curved extension formed on the outer wall of the inner tray and designed for frietional engagement with the outer face of the outer wall of said outer tray to aid in the retaining of said trays in locked engagement with one another.

7. In a crayon trough, an outer tray, the inner wall of which terminates at its upper end in a downwardly and outwardly deflectiug flange, an inner tray arranged within the outer tray under the aforesaid flange to be locked in position thereunder, an outwardly and inwardly curved extension formed on the outer wall of the outer tray, and separable means engaged with said last mentioned extension to form a bracing means for said trays.

In testimony whereof I hereunto affix my signature in the presence of' two witnesses.

ALVIN DUDFIELD.

lVitnesses:

HENRY M. Bnrmosnnr, EMIL Gr. SIMRALL.

Copies of this patent may be obtained for ve cents each, by addrenin `the Commissioner of Patente, Washington, D. C. 

